Murphy's sign is:
A) bruising around the umbilicus.
B) pain produced by pressing under the right costal margin in the presence of an inflamed gallbladder.
C) pain produced by pushing 1 to 2 inches above the iliac crest on a line to the umbilicus.
D) petechial hemorrhage of the abdominal wall.
B
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Which of the following statements regarding a compensated system for pressurized stairwells is MOST accurate?
A) A compensated system adjusts the airflow in the stairwell based on the number of occupants in the stairwell. B) Modulating the air supply can be accomplished using dampers. C) Overpressure relief is accomplished through the use of pressure sensors. D) Air supply modulation can be accomplished by varying the speed of the fan.
Which of the following agents may cause renal toxicity in elderly patients?
A) vitamin D B) digoxin C) warfarin D) cimetidine